Glue brush



FIG. 1 is a perspective view of the glue brush.

FIG. 2 is a side elevation view thereof, the side elevation views being mirror images of one another.

FIG. 3 is a top plan view thereof.

FIG. 4 is a bottom plan view thereof.

FIG. 5 is a front elevation view thereof, looking into the bristles; and,

FIG. 6 is a rear elevation view thereof.

The dashed lines form no part of the claimed design. 

CLAIM The ornamental design for a glue brush, as shown and described. 